A badge of honor? Invasion of privacy? A Wednesday instant poll of outed guests seemed, so far, divided on this issue.

“It’s not something I was aware of but it is probably ill-advised,” said Anna Wintour, the editor in chief of Vogue, who was Tweeted by Michael’s Wednesday and previously Tweeted on Monday — that day with her dinner companion, Les Moonves, the CBS chief executive.

A spokesman for Mr. Moonves, Gil Schwartz, a CBS executive who admitted to having had “a sashimi now and then at Michael’s,” said that Mr. Moonves “enjoyed the lunch but declined comment.” But Mr. Schwartz added, “There is no privacy at Michael’s.

Indeed, Media Bistro.com, in its “FishbowlNY” blog, has long given a weekly rundown on the Wednesday lunch bunch at Michael’s, going so far as to put up a numbered seating chart of the restaurant listing many tables’ occupants. This has prompted some fishbowl-wannabes to regularly make Wednesday reservations.

But though complicit, the restaurant itself wasn’t doing the outing.

“It would be an invasion of my public persona if they didn’t mention me,” said Jerry della Femina, the advertising legend, about his Twitteration, “and if I was left out I would be really insulted.” He outed his own Wednesday table mates — including Jeff Greenfield, Michael Kramer and Mr. Imber — and added, totally on the record, that he had consumed the pork chop special.

He added: “No one in the Witness Protection Program goes to Michael’s. You are going to be seen.”

Update | 7:59 p.m.

Michael McCarty, the 55-year-old owner of Michael’s, commented that “this is our family, and we like to share,” he said of the restaurant’s Twitter philosophy. “It is a celebration of the guests in our restaurant. No one comes here to hide.”

Of those who might be uneasy about the public outing, he said, “you can’t be everything to everybody. This restaurant is about the client,” he added, “and it’s about the fun.”

I think the only way to tell if this is the right move or not is to see if they still come. Of course, it’s different for different restaurants, and no restaurant PR guy is going to tweet WHILE a celeb is eating in the restaurant. It’s the modern-day equivalent of putting pictures on the wall.

I can attest that during a conversation with two celeb chef’s, they do not appreciate people Twittering that they are dining in a particular restaurant. One chef mentioned that as a result of someone Twittering his whereabouts, he was approached while exiting the establishment with his little daughter in his arms, trying to open a door with someone asking him for a picture and autograph. Neither minded someone Twittering after the fact, but while they are there, is an invasion of their privacy.